/* vim: set expandtab shiftwidth=4: -*- mode: c++; c-basic-offset: 4; tab-width: 8; indent-tabs-mode: nil -*-
EasyForms
An easy-to-use program for completing scanned documents.
Copyright (C) 2006 Wesley Crossman
Email: wesley@crossmans.net

You can redistribute and/or modify this software under the terms of the GNU
General Public License as published by the Free Software Foundation;
either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this
program; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
Suite 330, Boston, MA 02111-1307 USA */

#include "FormsView.h"
#include <QScrollBar>
#include <QMouseEvent>

FormsView::FormsView(QWidget *parent) : QGraphicsView(parent) {
    setBackgroundBrush(Qt::gray);
}

void FormsView::mousePressEvent(QMouseEvent *e) {
    QGraphicsView::mousePressEvent(e);
    if (e->button() == Qt::MidButton) {
        last = QPoint();
	viewport()->setCursor(Qt::SizeAllCursor);
    }
}

void FormsView::mouseReleaseEvent(QMouseEvent *e) {
    QGraphicsView::mouseReleaseEvent(e);
    if (!last.isNull()) {
        viewport()->unsetCursor();
    }
}

void FormsView::mouseMoveEvent(QMouseEvent *e) {
    QGraphicsView::mouseMoveEvent(e);
    if (e->buttons() & Qt::MidButton) {
	if (!last.isNull()) {
	    QPoint delta = e->pos() - last;
	    horizontalScrollBar()->setValue(horizontalScrollBar()->value()
		    + (isRightToLeft() ? delta.x() : -delta.x()));
	    verticalScrollBar()->setValue(verticalScrollBar()->value()
		    - delta.y());
	}
    last = e->pos();
    }
}

